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粉末冶金材料科学与工程  2024, Vol. 29 Issue (1): 11-19    DOI: 10.19976/j.cnki.43-1448/TF.2023064
  理论研究 本期目录 | 过刊浏览 | 高级检索 |
Co8W6Mo5Cr4V3粉末高速钢的热变形行为
杨礼林, 陈学敏, 陈朔, 赵莉萍
内蒙古科技大学 材料与冶金学院,包头 014010
Hot deformation behavior of Co8W6Mo5Cr4V3 powder high speed steel
YANG Lilin, CHEN Xuemin, CHEN Shuo, ZHAO Liping
School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China
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摘要 采用熔炼、电渣重熔和气雾化法制备Co8W6Mo5Cr4V3粉末,再通过热等静压制备Co8W6Mo5Cr4V3粉末高速钢。在不同变形条件下进行热压缩实验,研究粉末高速钢的热变形行为,根据获得的应力-应变曲线,建立热变形本构方程,绘制热加工图。结果表明:Co8W6Mo5Cr4V3粉末高速钢的流变应力随变形温度升高或应变速率减小而减小;通过本构方程预测的流变应力和实验得到的流变应力间的相关系数为0.995,可用此方程对粉末高速钢在不同变形条件下的应力进行预测;根据热加工图,粉末高速钢最优的变形温度为1 100~1 150 ℃,应变速率为0.1~1.0 s-1
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杨礼林
陈学敏
陈朔
赵莉萍
关键词 Co8W6Mo5Cr4V3粉末高速钢热变形本构方程热加工图    
Abstract:Co8W6Mo5Cr4V3 powder was prepared by melting, electroslag remelting, and gas atomization method, then Co8W6Mo5Cr4V3 powder high speed steel was prepared by hot isostatic pressing. Its thermal deformation behavior was studied through hot compression experiments that were conducted on the powder high speed steel under different deformation conditions. Based on the obtained stress-strain curves, a thermal deformation constitutive equation was established and a hot processing map was drawn. The results show that the flow stress of Co8W6Mo5Cr4V3 powder high speed steel decreases with the increase of deformation temperature or the decrease of strain rate. The correlation coefficient between the predicted flow stress through the constitutive equation and the experimental flow stress is 0.995, which can be used to predict the stress of powder high speed steel under different deformation conditions. According to the hot processing map, the optimal deformation temperature and strain rate of powder high speed steel are 1 100-1 150 ℃ and 0.1-1.0 s-1, respectively.
Key wordsCo8W6Mo5Cr4V3    powder high speed steel    thermal deformation    constitutive equation    hot processing map
收稿日期: 2023-07-16      出版日期: 2024-03-26
ZTFLH:  TG376.3  
  TF124  
基金资助:内蒙古自治区科技创新引导奖励资金项目(0902062001); 内蒙古科技大学创新基金(2019QDL-B05)
通讯作者: 赵莉萍,教授,硕士。电话:13848020066;E-mail: zhaoliping5195@126.com   
引用本文:   
杨礼林, 陈学敏, 陈朔, 赵莉萍. Co8W6Mo5Cr4V3粉末高速钢的热变形行为[J]. 粉末冶金材料科学与工程, 2024, 29(1): 11-19.
YANG Lilin, CHEN Xuemin, CHEN Shuo, ZHAO Liping. Hot deformation behavior of Co8W6Mo5Cr4V3 powder high speed steel. Materials Science and Engineering of Powder Metallurgy, 2024, 29(1): 11-19.
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